Coating device

Abstract

A coating device bears against support roll via runners or guide members which are arranged on the two sides of the housing of the coating device. The coating device is displaceable along guides and is forced by a pressure force against the support roll. Each of the runners or guide members is finished with a reduced-friction coating and is preferably rotatably articulated via a pivot to the housing of the coating device.

What is claimed is: 
     
       1. A coating device for applying a liquid layer to a surface of a sheet-type support material, comprising: (a) a housing on which a pressure force is exerted from a side of said housing opposite said surface of the sheet-type support material;   (b) a support roll for transporting the sheet-type support material;   (c) a base;   (d) an applicator mechanism mounted on said base, disposed within said housing and positioned in close proximity to the support roll for applying a liquid layer to the surface of the sheet-type support material transported on the support roll;   (e) a movable, ball- or roll-mounted guide along which said applicator mechanism is adjustable or displaceable; and   (f) a guide member, attached to each lateral side of said applicator mechanism, each of said guide members being biased into beating contact upon an outer surface of said support roll or upon the sheet-type support material transported thereon, said guide members tracking displacement of said support roll and adjusting alignment of said applicator mechanism with respect to said sheet-type support material transported on said support roll.   
     
     
       2. A coating device as claimed in claim 1, wherein said guide members are rotatably articulated via pivots to said housing. 
     
     
       3. A coating device as claimed in claim 1, wherein each of said guide members comprises a sliding runner having a reduced-friction coating on its surface facing said support roll. 
     
     
       4. A coating device as claimed in claim 1, wherein each of said guide members comprises a roller runner having two rollers resting on the outer surface of the support roll. 
     
     
       5. A coating device as claimed in claim 1, wherein said guide members bear against edge regions of the sheet-type support material transported on said support roll. 
     
     
       6. A coating device as claimed in claim 1, including prestressed compression springs having first ends bearing against said applicator mechanism on a side of said application mechanism opposite to said support roll, and second ends bearing against an abutment, to exert said pressure force upon said housing in order to bias said guide members against the support roll or against a surface of the sheet-type support material transported on said support roll. 
     
     
       7. A coating device as claimed in claim 1, including pneumatic elements having first ends bearing against said applicator mechanism on a side of said application mechanism opposite to said support roll, and second ends bearing against an abutment, to exert said pressure force upon said housing in order to bias said guide members against the support roll or against a surface of the support material transported on said support roll. 
     
     
       8. A coating device as claimed in claim 7, wherein said pneumatic elements comprise low-friction bellows cylinders. 
     
     
       9. A coating device as claimed in claim 1, further comprising on each lateral side of said applicator mechanism a bearing for rotatably joining said application mechanism to said guides. 
     
     
       10. A coating device as claimed in claim 1, further comprising fine adjustment means for adjusting the position of said applicator mechanism with respect to said base. 
     
     
       11. A coating device as claimed in claim 1, wherein said applicator mechanism comprises a slot die. 
     
     
       12. A coating device for applying a liquid layer to a surface of a sheet-type support material, comprising: (a) a housing on which a pressure force is exerted from a side of said housing opposite said surface of the sheet-type support material;   (b) a support roll for transporting the sheet-type support material;   (c) a base;   (d) an applicator mechanism mounted on said base, disposed within said housing and positioned in close proximity to the support roll for applying a liquid layer to the surface of the sheet-type support material transported on the support roll;   (e) a movable, ball- or roll-mounted guide along which said application mechanism is adjustable or displaceable; and   (f) a guide member, attached to each lateral side of said applicator mechanism, each of said guide members being biased into bearing contact upon an outer surface of said support roll or upon the sheet-type support material transported thereon, said guide members tracking displacement of said support roll and adjusting alignment of said applicator mechanism with respect to said sheet-type support material transported on said support roll,   wherein said guide members are rotatably articulated via pivots to said housing and wherein each of said guide members comprises a sliding runner having a reduced-friction coating on its surface facing said support roll.   
     
     
       13. A coating device as claimed in claim 12, wherein each of said guide members comprises a roller runner having two rollers resting on the outer surface of the support roll. 
     
     
       14. A coating device as claimed in claim 12, wherein said guide members bear against edge regions of the sheet-type support material transported on said support roll. 
     
     
       15. A coating device as claimed in claim 12, including prestressed compression springs having first ends bearing against said applicator mechanism on a side of said application mechanism opposite to said support roll, and second ends bearing against an abutment, to exert said pressure force upon said housing in order to bias said guide members against the support roll or against a surface of the sheet-type support material transported on said support roll. 
     
     
       16. A coating device as claimed in claim 12, including pneumatic elements having first ends bearing against said applicator mechanism on a side of said application mechanism opposite to said support roll, and second ends bearing against an abutment, to exert said pressure force upon said housing in order to bias said guide members against the support roll or against a surface of the support material transported on said support roll. 
     
     
       17. A coating device as claimed in claim 16, wherein said pneumatic elements comprise low-friction bellows cylinders. 
     
     
       18. A coating device as claimed in claim 12, further comprising on each lateral side of said applicator mechanism a bearing for rotatably joining said applicator mechanism to said guides. 
     
     
       19. A coating device as claimed in claim 12, further comprising fine adjustment means for adjusting the position of said applicator mechanism with respect to said base. 
     
     
       20. A coating device as claimed in claim 12, wherein said applicator mechanism comprises a slot die.